import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import User from '../components/user/User.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import GoodsList from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'

Vue.use(VueRouter)

const routes = [{
    path: '/',
    redirect: '/login'
}, {
    path: '/login',
    component: Login
}, {
    path: '/home',
    redirect: '/Welcome',
    component: Home,
    children: [{
            path: '/Welcome',
            component: Welcome
        }, {
            path: '/users',
            component: User
        }, {
            path: '/rights',
            component: Rights
        },
        {
            path: '/roles',
            component: Roles
        },
        {
            path: '/categories',
            component: Cate
        },
        {
            path: '/params',
            component: Params
        },
        {
            path: '/goods',
            component: GoodsList
        },
        {
            path: '/goods/add',
            component: Add
        },
        {
            path: '/orders',
            component: Order
        },
        {
            path: '/reports',
            component: Report
        }
    ]
}]

const router = new VueRouter({
    routes
})

//挂载路由导航守卫
router.beforeEach((to, from, next) => {
    //to 将要访问的地址  
    //from 代表从哪个路径跳转过来  
    //next 是一个函数 next()表示放行 next('/login') 代表强制跳转
    //如果用户访问的登录页，直接放行
    if (to.path == '/login') return next()
        //从sessionstorage中获取到保存的token值
    const tokenStr = window.sessionStorage.getItem('token')
        //没有token，强制跳转到登录页
    if (!tokenStr) return next('/login')
    next()
})

export default router